And take the helmet of salvation, and the Sword of the Spirit, which is the Word of God.
Ephesians 6:17
For the Word of God is quick, and powerful, and sharper than any two-edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.
Hebrews 4:12